Please help! BFP???

Melinda • Had 4 miscarriages in 2015 and had our rainbow baby December 2016
I took this test yesterday afternoon. I was 9DPO. It came back BFN but went to throw it away and saw a very faint line. I know it says to not read results after a certain amount of time but now I'm hoping and praying it's a BFP. Could it just take awhile to show up?